Apparatus for cleaning blackboard-erasers.



PATBNTBD AUG. 4, 1908.

, BERKELEY. APPARATUS FOR CLEANING BLACKBOARD ERASER-S.

' APPLICATION FILED APR. #1122.

v-vents:

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' bearings upon snid top and adapted to turn O is pivotal UNITED sT tgq.

HARRY o. BERKELEY, or. \t'ASHIXG'l'OS. nts'riuer or eoujisrt.

APPARATUS FOR c'mmirxo BLACKBOARD-ERASER Application filed April 4,1905.SEri'al No. 425.202. 1

1 To all whom it may concern:

Be it known thzttldlditfit' GBERKELBna citizen of the United States.residingt tWushi cleaned are adapted to be passed.

ington. in the District of Columbiu, have invented rertnin new anduseful lm rovenients i'n.- .ppnrntus for (.leaningBhielt onrdlit-risers;and l do hereby declare the followiin to be at full, clear, and exactdeseription of the invention, such as will enable others skilled in thenut to which it uppertains to uurlte rind use the same, reference beingbad to the ne-zonipnnyingl drawings, and to the letters and figures ofreference marked thereon, whit-h form :1 part of this speeiliention.

-'lhis invention relates to new and useful improvements in ap aratus forcleaning blackboard erasers and u lramenvorlt upon which a rotary brushis mounted and in the provision of an endless carrier having cleatsprojecting therefrom adapted to engage the opposite ends of the eraserwhile the brush is cleansing the eraser --zis-it is passed unde neaththe brush.

lhe invention comprises various details of construction. eonibiinttionsand BI'I'RIHU'C inentsbf parts which will be hereinafter fol describedand then specifically delined in the apuended ehiinis.

illustrate my invention in the zirconipsinying drawings, in which:-

Figure 1 is a side elevation of my improved apparatus for cleaningblackboard err sers. Fig. 2 is a longitudina sectional view through theapparatus, and Fig. 3 is an end view.

Rel'erena: now being its-i to the details of the drawings by letter,.\-A de ignate legs and f rming a framesupnnrt-ing a top B in suitable\\'or'. C is a brush mounted in an ever-mg D formed in said top. shalt Eis iournsded'ln sun-able hearings in the eross-pzet-cs F conneern srudlegs, and .-.tesr-.b:1lnner\ -h islixed to G desi t a the slum E and hasa ulllltf ll either integrul titi ttd thereto 1 unlesulzund whieh psrsabout said ved iulley ll and also about v. pulley i1 :.\t --.l to t re.brush L whereby the hitter msv be rotated. A ernnk N is tixed to theshat: E and n pit mm rozni-eeted to aid crank and also to the tron-:1 R,which latter is hinged at S to the .tO-V-uik.

A boxing or trot 'h, designated by letter eoniprises essentiallySpecification if Letters Pa tent.

2 erosi-rs epnroseh the end of the slot T upon the endless conveyer andPatented Aug. 4, 1908 v v t T, is mounted immediately underneath the topB and has an int-lined slot T leading therein through whieh the erasersto be Mounted to travel upon the sprot-set wheels Q is an endless('UIIVCj'tI belt having cleats I, made preferably of metal of anysuitable kind, designed to move through openings in the endsof saidboxing or trough, said cleats being a disttuieeinpurt equal to thelength of an eraser between which the emsers are held as the are. beingcleansed. A receptacle P is mounted neni' one end of the conveyor andinto which the erasers fall as the conveyer turns about. the roeketwheels. Fixed to a projecting endb the shafts Q, n on which the s rocketwheels Q are mountet is a hand' whee whereby one shaft or the other maybe rotated for. the pur rose of moving the eon\ 'e ver so tvbring d becleansed underneath the-brush. Imsaid boxing op iosite the ends of thebrush are the windows 1, whereby the operator may see when on eraserunites underneath the brush.

In operntir-nlhr ernsers are slipped through the conveyor is movedforward bv operating the hand wheel Q", and the brush started to r0-tnte by the tread power having connection therewith. The operat r bvturning the wheel Q will cause the endless carrier to more nud bringtrueraseis to be cleansed sut'et-ssivetv underneath the rapidly rotatingbrush. The brush. :Ut edge view of which is shown in Fig. 2-; of thedrrnrings, is narrow and preferably of n width court] to the width ofthe eraser bein; cleansed. As the brush rotates. )reiersi-iv inndirection opposite the travel oi the endless eiurier upon which theernsers are mounted, the latter will become thoroughly rienn ed as itunderneath the brush. If d sired, the perator may brin the endle scarrier to a stand-still if it should be 0 sired to allow the brush to 0erntu longer up n each ereser. When the the eonveyer, tl1t' drop intothel'ttcPtfaCiz-Z P, provided to eatt-h the some.

\i'hrtt I claim t be new is;-

An :ippnrntu for cleansing black-board ersscrsronipri n frame-work, e.rotatable brush mounted th r on, n trough underneath and adjacent, tothe top of ssid frame, said 1e Vdl'lUuS erusem tof trough havingopenings atits ends an end, less convewar, sprocket wheels upon which.the same travel, said eonveyermov'in through the apertures in the endsof sai trough, means for operating said conveyer 1 chain, a chuteleading through the top of the]! frame into said trough, as set forth.'1

In te'stimonj" wiierem I hereunto affix my signature in the presence oftwo witnesses.

HARRY G. BERKELEY.

Witnesses:

vA. L; Hench,

Fmxx-cux H. Hosea.

